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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
* Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <pc80/mc146818rtc.h>
void bootblock_mainboard_init(void)
{
uint8_t recovery_enabled;
unsigned char addr;
unsigned char byte;
bootblock_northbridge_init();
bootblock_southbridge_init();
/* Recovery jumper is connected to SP5100 GPIO61, and clears the GPIO when placed in the Recovery position */
recovery_enabled = (!(pci_read_config8(PCI_DEV(0, 0x14, 0), 0x57) & 0x1));
if (recovery_enabled) {
#if CONFIG_USE_OPTION_TABLE
/* Clear NVRAM checksum */
for (addr = LB_CKS_RANGE_START; addr <= LB_CKS_RANGE_END; addr++) {
cmos_write(0x0, addr);
}
/* Set fallback boot */
byte = cmos_read(RTC_BOOT_BYTE);
byte &= 0xfc;
cmos_write(byte, RTC_BOOT_BYTE);
#else
/* FIXME
* Figure out how to recover if the option table is not available
*/
#endif
}
}
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